streamline-emr/docker/streamline-src/Modules/Patients/Http/Controllers/AllergiesController.php

<?php

namespace Modules\Patients\Http\Controllers;

use Illuminate\Http\Request;
use Streamline\Models\Allergy;
use Streamline\Models\Patient;
use Streamline\Models\DrugCategory;
use Streamline\Models\PatientDocument;
use Streamline\Models\Alert;
use Illuminate\Support\Facades\DB;

class AllergiesController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $patient_id = session()->get('patient_id');
        $patient = Patient::find($patient_id);
        $categories = DB::table('patient_categories')->where('available', 1)->pluck("name", "id");
        $marital_statuses = DB::table('marital_statuses')->pluck("name", "id");
        $diagnoses = DB::table('diagnoses')->where('available', 1)->pluck("name", "id");
        $clinics = DB::table('clinics')->pluck("name", "id");
        $relationships = DB::table('family_relations')->pluck('name', 'id');
        $occupations = DB::table('occupations')->pluck('name', 'id');
        $patient_categories = DB::table('patient_categories')->where('available', 1)->pluck('name', 'id');
        $districts = DB::table('districts')->pluck('name', 'id');
        $counties = DB::table('counties')->pluck('name', 'id');
        $subcounties = DB::table('subcounties')->pluck('name', 'id');
        $parishes = DB::table('parishes')->pluck('name', 'id');
        $villages = DB::table('villages')->pluck('name', 'id');
        $drug_categories = DrugCategory::orderBy('name', 'asc')->get();
        $documents = PatientDocument::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_alerts = Alert::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_allergies = Allergy::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->get();
        $drug_categories_array = DB::table('drug_categories')->pluck('name', 'id');
        $drug_categories = DrugCategory::orderBy('name', 'asc')->get();
        return view('patients::allergies.index',compact('patient','known_patient_allergies','drug_categories_array','categories','drug_categories','relationships', 'occupations', 'patient_categories', 'diagnoses', 'categories', 'marital_statuses', 'districts', 'counties', 'subcounties', 'parishes', 'villages', 'drug_categories', 'documents', 'known_patient_alerts'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }

    /*
    * Add allergic drugs to a particular patient
    */
    public function store_patient_allergies(Request $request)
    {
        $patient_id = $request->allergy_patient_id;
        $patient_allergies_array = $request->patient_allergies;
        $allergies_string = implode(',', $patient_allergies_array);

        $existing_allergy = Allergy::where(['patient_id' => $patient_id])->first();
        $allergy = is_null($existing_allergy) ? new Allergy : $existing_allergy;
        $allergy->patient_id = $patient_id;
        $allergy->names = $allergies_string;
        $save_allergy = is_null($existing_allergy) ? $allergy->save() : $allergy->update(); /* if new patient allergy then insert else update the db table*/ 
        return $request->all();
    }
}